Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the content spans canvas format, page links and resume rules, but never states the response form (text guide vs. structured data) or its size, leaving a real gap for a tool whose entire value is its returned content.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three short sentences, front-loaded with the action and content scope, with the usage directive placed last. Nothing is redundant, though the opening phrase is slightly awkward and the list of stages could be tighter.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a no-parameter, read-only documentation tool with no output schema, the description supplies the content scope, the workflow stages and the trigger condition. The only missing piece is what the returned guide actually looks like, which matters since that is the entire deliverable.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies. The description correctly implies a parameterless read rather than hinting at hidden inputs.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource ('Lire le parcours Outil de création de site') and enumerates the covered stages (brief, propositions natives, retours ciblés, brouillon, publication), so an agent knows this is a documentation/context-reader tool. It does not explicitly contrast itself with nearby siblings like get_site_project or list_site_projects, which keeps it from a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives an explicit precondition: 'À lire avant toute création de site par MonAssocie', which tells the agent exactly when to invoke it. It stops short of naming alternatives or when-not-to-use cases, so it is clear context without full routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.